Enhanced Side Information Generator with Accurate Evaluations in Block-Based Wyner-Ziv Video Coding

  • Chang-Ming Lee
  • Jui-Chiu Chiang
  • Zhi-Heng Chiang
  • Kuan-Liang Chen
  • Wen-Nung Lie
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5414)

Abstract

Wyner-Ziv coding (WZC) has received a lot of attention lately. Based on the block unit for WZ-/intra-coding and the temporal distance between two consecutive key blocks, two techniques are proposed to improve the performance of block-based distributed video coding. Depending on the spatio-temporal analysis, the first method adjusts the mode assignment to a more precise generation of side information. In addition, the second method carries out the correlation calculation in the encoder side to ensure a better statistical estimation between the side information frame and the original frame. Thus, the more accurate side information combined with the more reliable statistical parameters results in an improved coding efficiency. The simulation results show that the compound of these two proposed methods has an improvement up to 2.7 dB with respect to the previous work in block-based WZC.

Keywords

Wyner-Ziv coding distributed video coding 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Chang-Ming Lee
    • 1
    • 2
  • Jui-Chiu Chiang
    • 1
    • 2
  • Zhi-Heng Chiang
    • 2
  • Kuan-Liang Chen
    • 1
  • Wen-Nung Lie
    • 1
    • 2
  1. 1.Department of Electrical EngineeringTaiwan, ROC
  2. 2.Department of Communication EngineeringNational Chung Cheng UniversityChia-YiTaiwan, ROC

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